Corrosion Behavior of Simulated HLW Glass in the Presence of Magnesium Ion | Zendy

Toshikatsu Maeda | Zendy; H. Ohmori | Zendy; Seiichiro Mitsui | Zendy; Tsunetaka Banba | Zendy

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Corrosion Behavior of Simulated HLW Glass in the Presence of Magnesium Ion

Author(s) -

Toshikatsu Maeda,

H. Ohmori,

Seiichiro Mitsui,

Tsunetaka Banba

Publication year - 2011

Publication title -

international journal of corrosion

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.312

H-Index - 18

eISSN - 1687-9333

pISSN - 1687-9325

DOI - 10.1155/2011/796457

Subject(s) - dissolution , magnesium , leaching (pedology) , leachate , materials science , corrosion , vitrification , silicate , metallurgy , ion , chemical engineering , inorganic chemistry , mineralogy , chemistry , environmental chemistry , geology , medicine , organic chemistry , soil science , engineering , andrology , soil water

Static leach tests were conducted for simulated HLW glass in MgCl2 solution for up to 92 days to investigate the dissolution mechanism of HLW glass under coastal repository condition. Under the condition that magnesium ion exists in leachate, the dissolution rate of the glass did not decrease with time during leaching, while the rate decreased when the magnesium ion depleted in the leachate. In addition, altered layer including magnesium and silica was observed at the surface of the glass after the leach tests. The present results imply that dissolution of the glass is accompanied with formation of magnesium silicate consuming silica, a glass network former. As a consequence, the glass dissolved with an initial high dissolution rate

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